linux-kernel - Re: [RFC][PATCH] mm: make zbud znd zpool to depend on zswap

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Message-ID: <CALZtONCSpXOB+8AZ4eVKfK8DeH0UX=ZuAK4zn8=UpVabP8pdNg@mail.gmail.com>
Date:	Tue, 15 Sep 2015 02:06:26 -0400
From:	Dan Streetman <ddstreet@...e.org>
To:	Sergey Senozhatsky <sergey.senozhatsky@...il.com>
Cc:	Seth Jennings <sjennings@...iantweb.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux-MM <linux-mm@...ck.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
Subject: Re: [RFC][PATCH] mm: make zbud znd zpool to depend on zswap

On Thu, Sep 10, 2015 at 8:28 AM, Sergey Senozhatsky
<sergey.senozhatsky@...il.com> wrote:
> There are no zbud and zpool users besides zswap so enabling
> (and building) CONFIG_ZPOOL and CONFIG_ZBUD make sense only
> when CONFIG_ZSWAP is enabled. In other words, make those
> options to depend on CONFIG_ZSWAP.

Let's wait on this until the patches to add zpool support to zram go
one way or the other.  If they don't make it in, I'm fine with this,
and even moving the zpool.h header into mm/ instead of include/linux/

>
> Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@...il.com>
> ---
>  mm/Kconfig | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/mm/Kconfig b/mm/Kconfig
> index 3455a8d..eb48422 100644
> --- a/mm/Kconfig
> +++ b/mm/Kconfig
> @@ -563,6 +563,7 @@ config ZSWAP
>
>  config ZPOOL
>         tristate "Common API for compressed memory storage"
> +       depends on ZSWAP
>         default n
>         help
>           Compressed memory storage API.  This allows using either zbud or
> @@ -570,6 +571,7 @@ config ZPOOL
>
>  config ZBUD
>         tristate "Low density storage for compressed pages"
> +       depends on ZSWAP
>         default n
>         help
>           A special purpose allocator for storing compressed pages.
> --
> 2.5.1
>
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